{"id":7355,"date":"2008-03-17T18:03:00","date_gmt":"2008-03-17T16:03:00","guid":{"rendered":""},"modified":"2008-03-17T18:03:00","modified_gmt":"2008-03-17T16:03:00","slug":"An opto-infrasonic sensor module installed in Montserrat Island (Caribbean).","status":"publish","type":"post","link":"https:\/\/www.ino.cnr.it\/?p=7355","title":{"rendered":"An opto-infrasonic sensor module installed in Montserrat Island (Caribbean)."},"content":{"rendered":"<p><img decoding=\"async\" src=\"http:\/\/fox.ino.it\/AllegatiPubblici\/Nuovo\/Ricerca29.jpg\" class=\"alignnone size-full\" \/><\/p>\n<p>A new infrasound sensors array system, based on optical fibre transmission, has been realized to monitor the explosiv activity of the Soufri\u00e8re volcano at Montserrat. The system is composed by an 4 channels receiver central station, recording data from 4 low power sensor nodes, measuring the following parameters<\/p>\n<ul>\n<li>Infrasound signal (16 bits).<\/li>\n<li>Temperature (1\u00b0C accuracy).<\/li>\n<li>Voltage of battery (8 bits)<\/li>\n<\/ul>\n<p>The Etna infrasound network has a \u201cstar\u201d configuration, organized in 4 stations, working like \u201cantennas\u201d to provide in real-time the propagation azimuth of the sonic beam. According to the geometry of the array it\u2019s possible to resolve the infrasound source position by grid searching algorithm calculating in real-time the cross-correlation between the single station. The infrasound signal, acquired by a microphone, is filtered by an active, low noise, 5 order, 20Hz low pass filter, then it is acquired by a 16 bit ADC at a rate of 50 samples\/sec. The user can set an amplification factor of 0,1\/0,5\/1\/10.<\/p>\n<p>Visit the explicative <a href=\"http:\/\/www.geo.mtu.edu\/volcanoes\/west.indies\/soufriere\/govt\/\">Web page<\/a><\/p>\n<p>News by Ciamberlini Claudio<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Installed at Montseerat island an infrasonic opto-array to survey a Soufri\u00e8re volcanoes in collaboration with local Observatory<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-7355","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/posts\/7355","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7355"}],"version-history":[{"count":0,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/posts\/7355\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7355"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7355"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}